Milking-machine.



1.. 11. DE LANBY 11 A. HOLTZBAUER.

MILKING MACHINE. n APPLICATION FILED lDPG. 22, 1910.

UNITED STATES,` PATENT omen.

LEO' D. DE vmunir AND MATHras .L HOLTZAUER, loF BELMONT), IOWA.

MILKING-Mnonmn.

n Specification of Letters Patent. Patelilteil lVIal. 26, 1912.

I yApplication yfiled Pecember 22, 1910. Serial No. 598,857.

To all whom it may concern:

Be it known that we, Lne D. DE LA'NEY and4 MATHIAs A. HOLTZBAUER, citizens of the United States, residing vat Belmond', in the county of `Wright and State of Iowa, havey invented certain new 4and useful Improvements in Milking-Machines, of which the following is a specification.

This invention relates to an improvement inmilking machines. :j 4

The primary object of this inventionisto provide a machine of this` character which Will be simple in construct-ion@ efficient in practice and economical to manufacture. p'

vOther objects and advantages' will be 'apparent from the followingdescription, andit will be understood kthat changes in they specific structure shown and describedmay be made within the scope of the claims without departing from the spi-rit ofthe invention. r

In the' drawings: Figure 1 1s a v1ew partly in sect-ion of the device in its applied position, Fig. 2 a detail view of the `can cover, F ig. 3 a detail view of the member adapted to hold said cover on theican, and,

\ F ig. 4 a detail view of the pump cylinders.

Fig. 5 is abottom plan view of the"d`evic e shown 1n Fig.- 3. Fig. 6 1s a sectional View ofthe vacuum chamber.

In the drawings: 10 designates a covery y'tubes 11 and 12. A metallic plate 11- ex-` tends transversely across the rover, said plate being provided wrt-hl a cent-rai depression 14: which receives thev end portion of a -screw 1-5 cfa cover tightening device, this cover tightening Jdevice consists of the mem-- Vbers 16 and 16. which are hingedly' con,-

nected to a nut 17 through which the screw 15 passes, the end por-tions of the member -16 being adapted to, grasp the can, 'as the screw 15 v is forced inengagement-with the cover.vv The provision of the hinged connec tions of the .members 16 and 16 makes the feasy application and removal ot the tighten- ,ing device from'. the can. lVere the members 16 Aand 1G `rigidly attached to the nut y 17, 'itwould lie-necessary to loosen the screw 15'- to agreater extent than in .the present case, to release the device from/ the can.

VVhenin operativel positi'om'the device as- .prevent back pressure.

Fig. 3. It -will thus be seen that to release 'A plurality of vacuum pumps 1S and 19` are positioned upon a vsuitable support which may be conveniently moved. These pumps are actuated means of the'lever `2O, the pistons voi saidv pumps being secured to blocks 21 which are adjustably arranged within grooves 21 formed Within the lever 20, this adjustment permitting the regulation of the stroke. The vacuum chamber 19 is connected by means of the tube 19' with "the tube .12', thus creating a vacuum within the' milk receptacle, a suitable cheek valve 19. being arranged in the tube 19 to TheA tube 11 carried, by the kcover is connected to-a chamber 23 which is ccnnectedtoa series of teat cups 22 by means ofa tube 11 which cups are placed ou the teats of the animal -to be milked. The chamber 23 is arranged at- La point adjacent fthe cover, a check* valve'23 being arranged in the tube 11 between said chamber and said cover. A. tube 24 connects the chamber 23 with the cylinder 18, said cylinder creating a ,vacuum in said chamber, drawing the milk through tube 11 into said chamber, the milk being then drawn from saidchamber by the vacuumwhich has been created inthe vmilk receptacle' by means. of thecylinder 19.

In the position shown in Fig. 1 the chamber 18 hascrea-ted avacuum in, the chamber 23 by meansvof the pipe24, which` vacuum is lled with milk from the cups 22, and upon moving; the-lever 20- tothe left the chamber 19 will create a vacuum in the 'can through the pipe 12 which will'suck the milk from' the chamber 23 through the check valve 2 3" and the pipe 1.1" into the can.` At

`the same time the piston of the chamber 18 descends, relieving the vacuum inthe chain.

ber 23, and permitting the air in thepipe 24 todpass vback toward said chamber. vIt will thus be' seenthagt a movement` tdithe right,`

of the llever 20 creates la vacuuniimthe chamber 23 tor drawinilkrom'f the cow..v

loo

while a movement of the lever in the opposite direction crea-tesa vacuum in the' can to draw the milk fromthe chamber 23, making a series of alternate formations ofvvacuum in the chamber 23 and in the can. The check valve 19 prevents any back pressure in the can,v While the check valve 23 pre' vents any back pressure of the milk tov, ard the cow. The valve 25 permitsthe air 1n the cylinder 19 to exhaust at every clown sure which would tend to disengage the teat cups.V Attention is also'called to the fact that when one can has been lled, the pressure may be cut off and the cover positioned on another can, the clamping means heretofore described facilitating the ready posi- A ticning of the cover.

'What is claimed is:

, 1.. A milking device consistingof a cover adapted to rest within the opening in a milk receptacle, a plate arranged transversely on ,saidcoven anut, a screw passing centrally through said nut, afplurality of retaining members hingedly connected to said nut, said retaining members being adapted to con y.tact withthe flange of the receptacle, a plurality of tubes extending through said cover, vpump cylinders,` one of said tubes being con nected to one of the pump cylinders which is. adapted to create a vacuum (within the milk receptacle, a'series of teat cups the second tube being connected t0 said series ofteat cups, a cham-berarranged on -said tube,

said chamber being connectedto the other of said pump cylinders whereby a vacuum is .35`

created in said-chamber.

2. A milking machine consisting of a cover adapted to form a closure for a milk receptacle, means for securing said cover to said receptacle, tubes extending through 40 said cover, means ,connected to one of Said tubes for creating a vacuum in said recepta cle, a suction chamber, the other of the tubes connecting said receptacle with the suction chamber, a tube connecting the `chamber 45 with `the milk supply, a second `vacuum creating means, andconnections between the said chamber and the second vacuum creating means.

3. The combination'with a` milk recepta- 50 cle and a plurality ofteat cups, of a pair of vacuum pumps, a vacuum chamber, connections between the teat cups andthe vacuum chamber, connections between the vacu- 'um chamber and the receptacle, connections 55 between the vacuum chamber and one of said vacuum pumps, connections between the receptacle andtheother of said vacuum pumps, and means for operating said pumps` whereby a vacuum is created alternately -in the receptacle and in the vacuu'mchamber.

' In testimony whereof we aiix our signatures, inpresence f two witnesses.

LEO D. DE LANEY. i. MATHIAS A. HOLTZBAUER.

Witnesses: Y i

JNo. BERG, EARL MADSEN. 

